| abstract |
The invention relates to mesogenic tetrahydropyran compounds having at least four rings, of the formula I n n n n n n n n n n in which R 1 , A 1 , A 2 , X 1 , L 1 , L 2 , m and n have the meanings indicated in Claim 1 , and to a process for the preparation thereof, to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one compound of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type. |